We seem to be at each extreme RW. Mine turns at 30rpm , yours looks like 130!
That my friend, is a stone chucker.
Nice to see it in operation
if you choose to go with battery power, this is the cats meow for voltage control and cheap. I've got a couple. One for testing stuff at various voltages and one use to run the screener but now it's running the Cat sign at the gas station.
http://www.ebay.com/itm/10V-60V-DC-M...item3ced8779fc